Day 9: Added some performance measurements

src/main/kotlin/com/basdado/adventofcode/Day9.kt

@@ -1,5 +1,7 @@
 package com.basdado.adventofcode
 
+import kotlin.system.measureTimeMillis
+
 fun main() {
     val day = Day9()
 
@@ -8,9 +10,10 @@ fun main() {
 //   // Correct last line: 0 16 8 17 4 18 19 2 24 20 25 10 21 5 22 11 1 12 6 13 3 14 7 15
 //    println(testGame.playerScores.joinToString())
 //
-    day.puzzle1()
+    println("Puzzle 1 time: " + measureTimeMillis { day.puzzle1() } + " ms")
     // Puzzle 1 answer = 385820
-    day.puzzle2()
+    // Let's do 10 runs
+    println("Puzzle 2 time: " + (1..10).map {measureTimeMillis { day.puzzle2() }}.average() + " ms")
 }
 
 class Day9 {